Does it work in GTA online when I create a crew lobby that XBOX (or Ps4. PC) players can also enter the lobby?

I would like to have a quick reply. My friends are not very familiar with it and we have a lot of different consoles.

I've been told you can't play cross platform

No do not go. Unfortunately…

No, as far as I know, cross-platform play is not yet possible in GTA 5.